<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
  <meta charset="UTF-8">
  <title>登录页</title>
</head>
<body>
<form action="/doLogin" method="post">
  <label>用户名：
    <input name="username"/>
  </label><br/>
  <label>密码：
    <input name="password" type="password"/>
  </label><br/>
  <input type="hidden" name="url" th:value="${url}"/>
  <input type="submit" value="登录"/>
</form>
</body>
</html>